Adjustable column-form.



i. E. HODGES. ADJUSTABLE COLUMN FORM. APPLICATION FRED FE,B.1.1915.

Patented Feb. 8, 1916.

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UNITED STATES PATENT oEEioE.

JESSE E. nonEs, or c'mcINNArI, 01110.

ADJUSTABTE COLUMN -FORM.

To all whom it may concern:

Be it known that I, JEssE E. HODGES, a citizen of the United States of America, and resident-f Cincinnati, county of Hamilton, State (if-Ohio, have invented certain'new and useful Improvements in Adjustable Column-Forms, of which the following is a specification. Y T

This invention relates to improvements in column forms for concrete structures and particularly to that class of column forms which are adjustable to mold columns of different sizes, and which are adapted to be used any desired number of times.

An object of my invention is to produce an adjustable column form of the class described in which improved means are employed for rendering the form ustable for both girth and height.

A further object is to produce an ad ustable column form which will mold columns more smoothly and at the same time to produce a form which may be more readily detached from the molded column without A further ob'ect is to produce a column form which is stronger, lighter, and cheaper than other column forms known to" me.

These and other objects are attained in' orin described in the following specifiand illustrated in the accompanying s in which:

Figure 1 is a plan view of a column form or mold embodying my invention, showing the form upon a somewhat enlarged scale. Fig. 2 is a side elevation of a form embodying my invention. 'Fig. 3 is a fragmental the i perspective view of a corner sheet employed ii constructing the mold embodying my inr ition. Fig. 4: is a fragmental perspective view of another corner sheet adapted to 00- v operate with the sheet illustrated in Fig. 3, in constructing a mold embodying my invention. Fig. 5- is a fragmental perspective view of the top of a column form embodying my invention with a portion of an auxiliary form mounted thereon, for, the purpose of increasing the height of the column form.

The column form embodying my invention consists of an angular sheet of metal 6 located at diagonally opposite corners of the mold, and having channel iron members 7 secured to the edges thereof, and a cooperating angular sheet 8 secured to the edges of the angular sheets 6, and located in the Specification of Letters Patent.

forcing the edges of the sheets in order toprevent them from' buckling when the mold is filled with concrete. The channel iron members are also provided for the purpose of supporting angular brace members 10 passing around the sheets, notches 7 being cut in the flanges of the channel iron members, to receive and support the angular brace members. The sheets 6 to which the channel iron strengthening members 7 are secured, are provided with a series of apertures 11 formed in the sheet, which extend toward the apex of the angle from the edges of the sheet and are located at intervals along the length of the sheet as disclosed in Figs. 2 and 3. The angle sheets 8 are however, provided 'with but one aperture 12 adjacent to each edge and located at intervals I Patented Feb. 8, 1916. Application filed February 1, 1915. Serial No. 5,361.

placed together, in order that bolts may be passed through the sheets 6 and'8 to properly secure them together in assembling the column form. The anglebraces 10 extend around two sides of the joined sheets 6 and 8, and are located in notches formed in the channel iron strengthening members 7 These angle braces are provided with a series of apertures 13 extending toward the apex'of the angle from each end of each brace, and the apertures are soarranged that when the angle braces are located'in the positions illustrated in Fig. 1, the apertures of one brace will register with the apertures of the brace cotiperating with it/ This is for the purpose of permitting pins 14L to be slipped into the registering apertures in order to secure the angle braces to gether in the slots formed in the channel iron strengthening members and around the joined sheets 6 and 8. *By providing in this manner a series of apertures .in the angle sheets Gand in the braces 10, the column is rendered adjustable, the sheets being adapted to telescope one within the other fee brought closer together forthe purpose of decreasing the girth of the column, or to permit the girth of the column to be increased as desired by drawing the sheets 6 and 8 farther apart and securing the angle bL-"bes 10 in wider adjustment with relation to me another.

- Having described the means for increasing or decreasing the girth of the column, I will now describe the meansemployed to increase or decrease the height of the column. This means consists of an attachment or 1 supplemental column form which is adapted -to be placed upon the column form proper and tobe secured in position thereon for the purpose of forming an increased length of mold which is to receive the con crete., This supplemental or auxiliary column form is constructed in. much the same manner that the column form proper is constructed, and consists of relatively ,short angle plates 15 which are located at diagonally opposite'corners of the column form, and in effect form continuation of the sheets 6 of the column form proper, and plain angle plates 16 which are adapted to cooperate with the plates 15 and which form in effect extensions of the plates 8 of the column form proper. The plates 15 like the plates 6 are provided with channel iron strengthening members 17 along their longitudinal edges. These channel iron members however, do not extend the entire length of the plates 15, since they are adapted to rest upon the upper edges of the strengthening members 7 of the plates 6% while the remainder or bottom portions o the sheets .15 extend into the column form into engagement with the plates 6. The plates 16 like the plates 8 are not however, provided with channel iron strengthening members and are merely adapted to cooperate with the plates 15 in the same manner as the plates 8 cooperate with the plates 6 in the column form proper, for the purpose of building up the form. The strengthen ing members 17 like the strengthening members 7 are provided with notches 17 which are adapted to receive angle braces 10, for the purpose of strengthening the mold.

In assembling the mold, the plates 6 are placed in an upright position Wit-h the inner faces of the plates opposite -one another. The plates 8 are then placed.;.in a position contacting the inner faces of the plates 6, and are located with their inner faces opposite one another. The plates so located are then secured. together by bringing the apertures 12 located in the platesS, into ,register with the proper apertures 11 located in the plates 6, so as to form a column of-the proper dimensions. In securing the plates together, fiat headed bolts 9 are employed, the heads of the bolts engaging the apertures 12 which are countersuhk to ceive them. This permits of the formation of the column face without inan'y way offecting the smooth surface thereof, when the-plates are removed. With the plates thus secured together by means of the 'bolts 9, the angle braces 10 are brought torcgister with the notches and to be supported thereby, the braces being brought togethei' until the proper apertures 13 ineach of the-78 brace members are brought to register with one another. With the apertures 13in the brace members registering properly, the pins 14 are passed through them andthe brace thus secured in posit-ion. :The purso pose of the strengthening members 7 is to strengthen the column form longitudinally at the points where it would be inclined tp' bulge when filled with concrete. The points at which the members 7 are located, are the 8!) middle of each of the sides of the column' form, the corners of the column form being sufficiently braced by having the right angle bend located at these points. The urpose of the braces 10 is to relieve the b0 ts 9 a great proportion of the strain imposedupon them, as well as to prevent the plates from shearing at the apertures 11 and 12.

i I contemplate constructing my improved column form as illustrated in the accompanying drawings, but it will be understood that I may also construct ihe sheets 8 with a series .rxf apertures 12 extending in the same dfflction as the apertures 11 formed in thy. sheets 6, in order to afford more varied" adjt rnent of the plates. I" may also cbnstrlct' the auxiliary or supplemental columniorms with apertures located in intermediate positions to those shown, for the purpose of permitting the auxiliary form to be located a :d secured at different heights within the column form proper.

I contemplate building my improved mold by utilizing sheet metal of a thin gage so that the molded column will not have ridges formed thereon at points where the sheets overlap one another. I am permitted to construct my column form of such relatively thin sheets, since I provide strengthening means not only for the lon tudinal dimension of the column, but a o for the girth of the column. In addition to this, at the top of the column I bend over the sheets forming the auxiliary column form, for the purpose of providing a shelf '120 for supporting the beam molds, floor panel molds, or other portions of the concrete molding structure.

Having thus described my invention, what I claim is:

1. In a form for concrete columns, the combination of a. series of angle plates adapted to form the corners of a mold body and adjustably secured together at their edges to form the sides of a mold body, a 180 series of longitudinally extending notched braces located at intermediate points of the sides of the mold, and a series of transversely extending adjustable clamps located in the notches of the longitudinallyextend ing braces and surrounding the mold.

2. In combination in a form for concrete columns, a series of angle plates having a" series of apertures formed in their edges and adapted to be adjustably secured to gether by bolts located in registering apertures of adjacent plates, a series'of lon itudinally extending notched braces located at intermediate points of the sides of the mold, and -a series of transversely extending clamps located in the notches of the longitudinally extending braces, embracing the joined plates and having a series of apertures formed therein, said transversely extending clamps being adapted to be secured together, and bolts located in registering apertures of cooperating clamps,

A form for concrete columns, C0111- prising a series of angle plates adjustably secured-together at their edges to form a mold, a series of longitudinally extending notched braces located at intermediate points of the sides of the moldand a series of transversely extending adjustable clamps located in the notches of the longitudinally extending braces and surrounding the mold, each of said clamps comprising a rigid member adapted to embrace one half of the circumference of the mold, and a second rigid member adapted to coijperate with the first mentioned rigid member to adjustably engage the other half of the circumference of the mold.

4Q In a form for c'oncerte columns the combination of a series of angle plates having a series of transversely and longitudinally alined apertures in their edges, adapted to be adjustably secured together by bolts located in registering apertures of adjacent plates, a series of longitudinally extending notchedbraces located at intermediate points of the sides of the mold, a series of transversely extending clamps located in the notches of the longitudinally extending braces, each of said clamps embracing the joined plates and comprising a rigid member adapted to embrace one half cf the circumference of the mold, and a co'c perating rigid member adapted to club ace the other half of the circumference of the mold, each of said members having a series of apertures formed in their ends, and bolts located in registering apertures of cooperating memhere.

.In testimony whereof, I have hereunto subscribed my name this 25th day of January, 1915.

, l-EGDG-LEIE. ii itnc ses WALTER F. MURRAY, B. R. Know. 

